One question... if you are parked and it rains, what would stop water getting into the trumpet and from there into the air box? Is there a drain in the box?_________________993 C4, Coupe '94 manual
Previous - '03 986 Boxster S

After talking to Colin Belton at 9m I took it off, he reckon's it does nothing at all for a NA. The engine fan blasts all the warm air out ot the engine compartment and it kept coming loose, the FVD one listed for a 993 will not fit, it is for a 964 airbox. There could also be a disturbance to the clutch ventilation pipe as the interior airflow is different.
Perhaps it works better with the CS wing._________________Porsche 944 S2 Coupe Guards Red
Porsche 993 Coupe 9m RS Replica

After talking to Colin Belton at 9m I took it off, he reckon's it does nothing at all for a NA. The engine fan blasts all the warm air out ot the engine compartment and it kept coming loose, the FVD one listed for a 993 will not fit, it is for a 964 airbox. There could also be a disturbance to the clutch ventilation pipe as the interior airflow is different.
Perhaps it works better with the CS wing.

in fairness to Colin that's doesn't just 'a reckoning' for this application

the OEM Porsche part fits, of course it's just a plastic piece fitted onto another plastic so don't expect a clinical cabin finish

since it's there to 'better direct' cold air into the airbox and avoid the hot air build up from within the engine bay that occurs as speeds rise with a fixed rear spoiler

sure the differences will be relative and more so at high speed, but there is a reason why Porsche have this on the RS and Turbo models_________________Get a Porsche Car Insurance Quote

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TobesetcBarcelona

Joined: 02 Jun 2014Posts: 1331Location: West London, UK

Posted: Sun Aug 13, 2017 6:00 pm Post subject:

Trumpet doesn't fit the sport airbox because the chrome effect bit is where the trumpet connects.

You pull the chromed bit out ref:-
http://www.pelicanparts.com/techarticles/pcar_com/intake_temp_test2.htm
There is much chat about it on rennlist forum. In practice it makes very little difference, It is a turbo part allowing air to enter without going through the intercooler . It was not standard fitment on the RS. cutting away lots of the filter cover make things worse regarding intake temp but increase induction noise._________________Porsche 944 S2 Coupe Guards Red
Porsche 993 Coupe 9m RS Replica

You pull the chromed bit out ref:-
http://www.pelicanparts.com/techarticles/pcar_com/intake_temp_test2.htm
There is much chat about it on rennlist forum. In practice it makes very little difference, It is a turbo part allowing air to enter without going through the intercooler . It was not standard fitment on the RS. cutting away lots of the filter cover make things worse regarding intake temp but increase induction noise.

useful link

with this at the bottom

Quote:

P.S.

993 NA owners with the factory retractable tail will not to be concerned about this. If you look closely at your grill in relation to the intake opening you will understand what I mean. Also when the tail is extended out there is a plastic wall in the back of the tail that directs cold air to enter the intake opening.

This addition is mainly for 993 NA cars with a fix tail installed on their 993. I do recommend this addition to be added to your 993 to ensure that you get as much cold air entering the intake as possible. as a reference (For every 10 degree change in air temperature there is 1% change in power)

The air temperature at the filter does not affect the turbo car in the same way as it does in a non-turbo car. This is due to the turbochargers ability to partially compensate by spinning faster and still compressing the same amount of air regardless of temperature._________________Get a Porsche Car Insurance Quote

I'll be damned if I can get the snorkel out without damaging the main cover, so may try again at the weekend, as the horn seems like the sensible mod whereas the sports/sound box... has at least been fitted OK.

Will try the remove the snorkel from the old cover and use that with the trumpet._________________993 C4, Coupe '94 manual
Previous - '03 986 Boxster S

As I now have two air-boxes with two snorkels, I think I'll just use a small drill (dremel type thing) to remove the securing lugs on the old snorkel and bin it. That means I can fit the horn to the old air-box to get cold air or use the new one to get sound...

So, heat was a good call. Bowl of hot water and the snorkel was removed in one piece.

Next issue - the horn fouls on the bonnet lid - see picture below. Not just the lip, it'll foul quite a long way down. See the red lines. Did other people have this issue? Reluctant to start cutting it up.

It's almost like I need a mirror image of the horn I've got - if it bent like the alternative blue line it'd be fine..._________________993 C4, Coupe '94 manual
Previous - '03 986 Boxster S

So, heat was a good call. Bowl of hot water and the snorkel was removed in one piece.

Next issue - the horn fouls on the bonnet lid - see picture below. Not just the lip, it'll foul quite a long way down. See the red lines. Did other people have this issue? Reluctant to start cutting it up.

It's almost like I need a mirror image of the horn I've got - if it bent like the alternative blue line it'd be fine...

AS far as I know it's original... but the bonnet lid was on it when I got it. The wing is original, but it's not what fouls.

Edit: I have the small aerokit tail not the ducktail... is that why?_________________993 C4, Coupe '94 manual
Previous - '03 986 Boxster S

TobesetcBarcelona

Joined: 02 Jun 2014Posts: 1331Location: West London, UK

Posted: Fri Aug 18, 2017 7:01 am Post subject:

One question before I try my first custom fabrication this weekend... what have you (911UK?) used to stick bits of trumpet together? I'm fairly sure I know what I'm going to use and I have what seems like an elegant solution in mind, but want to check if anyone had a better adhesive in mind...

If it works, there'll be a big "unveil" this weekend. If it doesn't... the thread will go very quiet _________________993 C4, Coupe '94 manual
Previous - '03 986 Boxster S

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